Acquisitions (Narrative) (Details) (USD $)	0 Months Ended	1 Months Ended			12 Months Ended						1 Months Ended		12 Months Ended			1 Months Ended				1 Months Ended										3 Months Ended	12 Months Ended										12 Months Ended
	Dec. 28, 2010	Mar. 31, 2012	Jul. 31, 2011	Nov. 30, 2010	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010		Jan. 31, 2012 Gulf Of Mexico Crude Oil Pipeline Systems [Member]	Nov. 23, 2010 Cameron Highway Oil Pipeline Company [Member]	Dec. 31, 2010 Cameron Highway Oil Pipeline Company [Member]	Dec. 31, 2012 Cameron Highway Oil Pipeline Company [Member] mi	Dec. 31, 2011 Cameron Highway Oil Pipeline Company [Member]	Aug. 31, 2011 FMT Black Oil Barge Transportation Business [Member]	Aug. 09, 2011 FMT Black Oil Barge Transportation Business [Member] Barge push_boats	Jan. 03, 2012 FMT Lease [Member]	Aug. 09, 2011 FMT Black Oil Barge Transportation Business Fuel Inventory And Other Cost [Member]	Nov. 30, 2011 Garco Refinery [Member] mi	Nov. 30, 2011 Garco Refinery Petroleum Inventories [Member]	Aug. 09, 2011 FMT Lease [Member] FMT Black Oil Barge Transportation Business [Member] Barge	Jan. 03, 2012 Poseidon Oil Pipeline Company, L.L.C. [Member]	Jan. 03, 2012 Marathon Offshore Pipeline, LLC [Member]	Jan. 03, 2012 Odyssey Pipeline L.L.C. [Member]	Dec. 31, 2012 Eugene Island Pipeline System [Member]	Dec. 31, 2012 Two Offshore Smaller Pipelines [Member] Pipelines	Nov. 30, 2010 CHOPS [Member]	Nov. 30, 2010 CHOPS [Member] Cameron Highway Oil Pipeline Company [Member]	Sep. 30, 2010 DG Marine [Member]	Dec. 31, 2010 DG Marine [Member]	Jul. 31, 2010 DG Marine [Member]	Dec. 31, 2012 Minimum [Member] Cameron Highway Oil Pipeline Company [Member] in	Nov. 30, 2011 Minimum [Member] Garco Refinery [Member] in	Dec. 31, 2012 Maximum [Member] Cameron Highway Oil Pipeline Company [Member] in	Nov. 30, 2011 Maximum [Member] Garco Refinery [Member] in	Jul. 31, 2010 TD Marine LLC [Member] DG Marine [Member]	Dec. 31, 2012 Enterprise Products Partners, L.P. [Member] Poseidon Oil Pipeline Company, L.L.C. [Member]	Dec. 31, 2012 Enterprise Products Partners, L.P. [Member] Odyssey Pipeline L.L.C. [Member]	Dec. 31, 2012 Enterprise Products Partners, L.P. [Member] CHOPS [Member] Cameron Highway Oil Pipeline Company [Member]	Dec. 31, 2012 Pipeline Transportation [Member]		Dec. 31, 2011 Pipeline Transportation [Member]		Dec. 31, 2010 Pipeline Transportation [Member]		Dec. 31, 2012 Pipeline Transportation [Member] Gulf Of Mexico Crude Oil Pipelines [Member]
Business Acquisition [Line Items]
Ownership percentage																				90.00%			28.00%	100.00%	29.00%	23.00%	100.00%	50.00%				49.00%						36.00%	71.00%
Number of piepelines																											2
Purchase price of acquired entity												$ 330,000,000					$ 143,500,000	$ 30,900,000	$ 2,500,000	$ 20,000,000	$ 1,300,000
Effective date of acquisition											Jan. 03, 2012					Aug. 01, 2011				Nov. 01, 2011
Number of barges acquired																	30					7
Number of push boats acquired																	14
Proceeds received from offering, net of costs		169,421,000	184,969,000	118,837,000
Pipeline capacity, barrels per day														500,000						3,500
Pipeline length, in miles														380						300
Pipeline diameter, in inches																																	24	3	30	6
Percentage of equity interest acquired																													50.00%			51.00%
Purchase price adjustments												2,500,000
Issuance of units for cash, shares													5,175,000
Price per share of common units issued		$ 30.80	$ 26.30	$ 23.58								$ 23.58
Proceeds from issuance of senior unsecured notes, including premium					101,000,000		0		250,000,000				250,000,000
General Partners' interest percentage	2.00%											2.00%
Proceeds from issuance of common units and general partner contribution net of issuance costs													119,000,000
Percentage of interest In joint venture																																								50.00%
Cash paid for acquisition															330,000,000																						25,500,000
Pay off of outstanding principal balance																														44,400,000
Interest expense					40,921,000		35,767,000		22,924,000																					1,300,000
Reclassification of the noncontrolling interest to partners capital account in business acquisition																															21,300,000
Reduction in partners' capital due to acquisitions									26,288,000
Contributions from partners' capital				2,490,000					2,541,000
Transaction costs related to business acquisition																																800,000
Decrease in capital due to acquisition																															5,000,000
Segment Reporting Information, Expenditures for Additions to Long-Lived Assets					$ 426,298,000	[1]	$ 186,994,000	[1]	$ 336,730,000	[1]																															$ 328,710,000	[1]	$ 14,501,000	[1]	$ 333,557,000	[1]	$ 205,600,000

[1] Capital expenditures include maintenance and growth capital expenditures, such as fixed asset additions (including enhancements to existing facilities and construction of internal growth projects) as well as acquisitions of businesses and interests in equity investees. Capital spending in our pipeline transportation segment included $63.7 million during the year ended December 31, 2012 representing capital contributions to our SEKCO equity investee to fund our share of the construction costs for its pipeline. During the same period, capital spending in our pipeline transportation segment also included $205.6 million for the acquisition of interests in several Gulf of Mexico pipelines. During 2012, capital spending in our supply and logistics segment also included $30.9 million for the purchase of barge assets.